HTTP Status Codes
The most important ones:
 200 OK
everything is fine, here is your content
 404 Not Found
the page you are trying to view doesn’t exist
 301 Permanent Redirect
the page you are trying to view has moved permanently,
here’s the new URL
 302 Temporary Redirect
the page you are trying to view has moved temporarily,
here is the new URL
 500 Server Error
there’s been a massive fuck up, I can’t serve you this page
@badams
POLEMIC
D I G I T A L

Use Canonicals wisely…
• “rel=canonical” is primarily for index issues
It is not a fix for crawl waste
Search engines need to see the canonical tag
before they can act on it
Ergo, pages need to be crawled before
rel=canonical has any effect
Ditto with meta noindex tags
POLEMIC
@badams
D I G I T A L

High-churn Ecommerce
• Products with a limited lifespan, potentially
thousands of new pages every week
Online auctions / ‘… for sale’ classified sites / etc
 301-redirect old URL to most relevant new URL
Minimum 180 days
Serve 410 (or 404) on old URL after 180 days
POLEMIC
@badams
D I G I T A L